<?php 
/*
Copyright GHINK Network Studio
Author: Bigsk(https://www.xiaxinzhe.cn)
*/
if(!defined('IN_SYS')){//Defined entreance security.
    header('HTTP/1.1 403 Forbidden');
    exit(file_get_contents(setting::root."template/403.html"));
}
//邮件发送函数
class smtp{
	var $smtp_port;
	var $time_out;
	var $host_name;
	var $log_file;
	var $relay_host;
	var $debug;
	var $auth;
	var $user;
	var $pass;
	var $sock;
	function __construct($relay_host="", $smtp_port=25, $auth=false, $user, $pass){
	  $this->debug=FALSE;
	  $this->smtp_port=$smtp_port;
	  $this->relay_host=$relay_host;
	  $this->time_out=30;
	  $this->auth=$auth;
	  $this->user=$user;
	  $this->pass=$pass;
	  $this->host_name="localhost";
	  $this->log_file="";
	  $this->sock=FALSE;
	}
	function sendmail($to, $from, $subject="", $body="", $mailtype, $cc="", $bcc="", $additional_headers=""){
	  $header="";
	  $mail_from=$this->get_address($this->strip_comment($from));
	  $body=mb_ereg_replace("(^|(\r\n))(\\.)", "\\1.\\3", $body);
	  $header .="MIME-Version:1.0\r\n";
	  if ($mailtype=="HTML") {
		$header .='Content-type: text/html; charset=utf-8'."\r\n";
	  }
	  $header .="To: ".$to."\r\n";
	  if ($cc !="") {
		$header .="Cc: ".$cc."\r\n";
	  }
	  $header .="From: ".$from."\r\n";
	  $header .="Subject: ".$subject."\r\n";
	  $header .=$additional_headers;
	  $header .="Date: ".date("r")."\r\n";
	  $header .="X-Mailer:By (PHP/".phpversion().")\r\n";
	  list($msec, $sec)=explode(" ", microtime());
	  $header .="Message-ID: <".date("YmdHis", $sec).".".($msec * 1000000).".".$mail_from.">\r\n";
	  $TO=explode(",", $this->strip_comment($to));
	  if ($cc !="") {
		$TO=array_merge($TO, explode(",", $this->strip_comment($cc)));
	  }
	  if ($bcc !="") {
		$TO=array_merge($TO, explode(",", $this->strip_comment($bcc)));
	  }
	  $sent=TRUE;
	  foreach ($TO as $rcpt_to) {
		$rcpt_to=$this->get_address($rcpt_to);
		if (!$this->smtp_sockopen($rcpt_to)) {
		  $this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
		  $sent=FALSE;
		  continue;
		}
		if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
		  $this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
		}else{
		  $this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
		  $sent=FALSE;
		}
		fclose($this->sock);
		$this->log_write("Disconnected from remote host\n");
	  }
	  echo "<br>";
	  return $sent;
	}
	function smtp_send($helo, $from, $to, $header, $body=""){
	  if (!$this->smtp_putcmd("HELO", $helo)) {
		return $this->smtp_error("sending HELO command");
	  }
	  if ($this->auth) {
		if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {
		  return $this->smtp_error("sending HELO command");
		}
		if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
		  return $this->smtp_error("sending HELO command");
		}
	  }
	  #
	  if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) {
		return $this->smtp_error("sending MAIL FROM command");
	  }
	  if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) {
		return $this->smtp_error("sending RCPT TO command");
	  }
	  if (!$this->smtp_putcmd("DATA")) {
		return $this->smtp_error("sending DATA command");
	  }
	  if (!$this->smtp_message($header, $body)) {
		return $this->smtp_error("sending message");
	  }
	  if (!$this->smtp_eom()) {
		return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
	  }
	  if (!$this->smtp_putcmd("QUIT")) {
		return $this->smtp_error("sending QUIT command");
	  }
	  return TRUE;
	}
	function smtp_sockopen($address){
	  if ($this->relay_host=="") {
		return $this->smtp_sockopen_mx($address);
	  }else{
		return $this->smtp_sockopen_relay();
	  }
	}
	function smtp_sockopen_relay(){
	  $this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");
	  $this->sock=@fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
	  if (!($this->sock && $this->smtp_ok())) {
		$this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");
		$this->log_write("Error: ".$errstr." (".$errno.")\n");
		return FALSE;
	  }
	  $this->log_write("Connected to relay host ".$this->relay_host."\n");
	  return TRUE;
	  ;
	}
	function smtp_sockopen_mx($address){
	  $domain=ereg_replace("^.+@([^@]+)$", "\\1", $address);
	  if (!@getmxrr($domain, $MXHOSTS)) {
		$this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
		return FALSE;
	  }
	  foreach ($MXHOSTS as $host) {
		$this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
		$this->sock=@fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
		if (!($this->sock && $this->smtp_ok())) {
		  $this->log_write("Warning: Cannot connect to mx host ".$host."\n");
		  $this->log_write("Error: ".$errstr." (".$errno.")\n");
		  continue;
		}
		$this->log_write("Connected to mx host ".$host."\n");
		return TRUE;
	  }
	  $this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
	  return FALSE;
	}
	function smtp_message($header, $body){
	  fputs($this->sock, $header."\r\n".$body);
	  $this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));
	  return TRUE;
	}
	function smtp_eom(){
	  fputs($this->sock, "\r\n.\r\n");
	  $this->smtp_debug(". [EOM]\n");
	  return $this->smtp_ok();
	}
	function smtp_ok(){
	  $response=str_replace("\r\n", "", fgets($this->sock, 512));
	  $this->smtp_debug($response."\n");
	  if (!mb_ereg("^[23]", $response)) {
		fputs($this->sock, "QUIT\r\n");
		fgets($this->sock, 512);
		$this->log_write("Error: Remote host returned \"".$response."\"\n");
		return FALSE;
	  }
	  return TRUE;
	}
	function smtp_putcmd($cmd, $arg=""){
	  if ($arg !="") {
		if ($cmd=="")
		  $cmd=$arg;
		else
		  $cmd=$cmd." ".$arg;
	  }
	  fputs($this->sock, $cmd."\r\n");
	  $this->smtp_debug("> ".$cmd."\n");
	  return $this->smtp_ok();
	}
	function smtp_error($string){
	  $this->log_write("Error: Error occurred while ".$string.".\n");
	  return FALSE;
	}
	function log_write($message){
	  $this->smtp_debug($message);
	  if ($this->log_file=="") {
		return TRUE;
	  }
	  $message=date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
	  if (!@file_exists($this->log_file) || !($fp=@fopen($this->log_file, "a"))) {
		$this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
		return FALSE;
	  }
	  flock($fp, LOCK_EX);
	  fputs($fp, $message);
	  fclose($fp);
	  return TRUE;
	}
	function strip_comment($address){
	  $comment="\\([^()]*\\)";
	  while (mb_ereg($comment, $address)) {
		$address=mb_ereg_replace($comment, "", $address);
	  }
	  return $address;
	}
	function get_address($address){
	  $address=mb_ereg_replace("([ \t\r\n])+", "", $address);
	  $address=mb_ereg_replace("^.*<(.+)>.*$", "\\1", $address);
	  return $address;
	}
	function smtp_debug($message){
	  if ($this->debug) {
		echo $message."<br>";
	  }
	}
	function get_attach_type($image_tag){
	  $filedata=array();
	  $img_file_con=fopen($image_tag, "r");
	  unset($image_data);
	  while ($tem_buffer=AddSlashes(fread($img_file_con, filesize($image_tag))))
		$image_data .=$tem_buffer;
	  fclose($img_file_con);
	  $filedata['context']=$image_data;
	  $filedata['filename']=basename($image_tag);
	  $extension=substr($image_tag, strrpos($image_tag, "."), strlen($image_tag) - strrpos($image_tag, "."));
	  switch ($extension) {
		case ".gif":
		  $filedata['type']="image/gif";
		  break;
		case ".gz":
		  $filedata['type']="application/x-gzip";
		  break;
		case ".htm":
		  $filedata['type']="text/html";
		  break;
		case ".html":
		  $filedata['type']="text/html";
		  break;
		case ".jpg":
		  $filedata['type']="image/jpeg";
		  break;
		case ".tar":
		  $filedata['type']="application/x-tar";
		  break;
		case ".txt":
		  $filedata['type']="text/plain";
		  break;
		case ".zip":
		  $filedata['type']="application/zip";
		  break;
		default:
		  $filedata['type']="application/octet-stream";
		  break;
	  }
	  return $filedata;
	}
  }